A San Francisco-based company that develops and finances large-scale energy efficiency projects has announced an efficiency services agreement (ESA) project with Bristol Hospital that is expected to reduce the hospital's energy and water use by more than 20 percent.

It's Metrus Energy's first deal in Connecticut.

Construction related to the $4.1 million efficiency-as a-service project is scheduled to begin next week at the hospital's main campus and at its Ingraham Manor skilled nursing facility at 400 N. Main St., Bristol. Work includes LED lighting retrofits, building envelope upgrades, an energy management system, power factor correction, steam trap replacements, water conservation and air handling unit replacements. Work is expected to be completed in January 2019.

Ric Braam, the hospital's chief financial officer, said the energy and water savings will help pay for critical new equipment and facility upgrades benefiting patients.

Facilities contractor Trane will be responsible for the installation, operation and management of the energy and water efficiency measures.

"Bristol Hospital operates in a 24/7/365 environment where energy and water are always being used and aging infrastructure is costly and requires significant maintenance," said Joshua Tucker, vice president and general manager for Trane in Connecticut, New York and Vermont. In addition to saving Bristol Hospital energy and water, the upgrades will reduce operating costs, simplify facility maintenance and improve indoor air quality and patient comfort, he added.